MESON Chess Problem Database

Problem Display
PID: 179249 (B7/4n3/8/2Kn4/8/3k4/2R1R3/8 w - - 0 1)

Lincoln, Robert A

Problem Observer, 2010

B7/4n3/8/2Kn4/8/3k4/2R1R3/8

#2

4 + 3

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Rcd2#
    • 1...Se3
      • 2.Red2#
    • 1...Sb4
      • 2.Be4#
    • 1...Sf4
      • 2.Be4#
    • 1...Sb6
      • 2.Be4#
    • 1...Sc7
      • 2.Be4#
  • Tries
    • 1.Bc6?
      • threat
        • 2.Bb5#
      • 1...Sc3
        • 2.Rcd2#
      • 1...Se3
        • 2.Red2#
      • 1...Sb6
        • 2.Be4#
      • 1...Sc7
        • 2.Be4#
      • 1...Sxc6!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Ba6#
      • 1...Sc3
        • 2.Rcd2#
      • 1...Se3
        • 2.Red2#
      • 1...Sb4
        • 2.Be4#
      • 1...Sb6
        • 2.Be4#
      • 1...Sc7
        • 2.Be4#

Anticipated by 67932(1987)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(b);SBLOCK::R1(A)
    • S(b);SBLOCK::R1(B)
    • S(b);OGATE::B(D)
  • Tries
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • S(b);SBLOCK::R1(A)
        • S(b);SBLOCK::R1(B)
        • S(b);OGATE::B(D)
      • Refutation
        • S(c);XB(D)
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • S(b);SBLOCK::R1(A)
      • S(b);SBLOCK::R1(B)
      • S(b);OGATE::B(D)
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